Arun Kumar Tomar

Arun Kumar Tomar

Full-Stack Developer → Aspiring Cloud & DevOps Engineer

Noida, IN.

About

I'm a Full-Stack Web Developer with 1+ years of hands-on experience building performant, scalable web applications using React.js, Node.js, and TypeScript. I bring a product mindset to every project — writing code that's built to last and experiences that users love.
Beyond development, I'm actively expanding my expertise into Cloud & DevOps — learning tools and practices around AWS, CI/CD pipelines, containerization (Docker), and infrastructure automation — with a clear goal of bridging the gap between software development and cloud engineering.
What makes me valuable to a team is my ability to think across the stack — from optimizing frontend performance to designing efficient APIs and databases — combined with a growing cloud mindset that helps me build not just for today, but for scale.
I'm currently seeking opportunities where I can contribute as a developer while growing into a Cloud or DevOps role, working alongside teams that value curiosity, ownership, and continuous improvement.

Work

Hundred Waves Sdn. Bhd.

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Software Developer - Remote

Kuala Lumpur, Malaysia

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Full time

Summary

Contributed to building and optimizing scalable web applications using React.js, Node.js, and TypeScript, working across the full stack from database design to frontend delivery. Focused on writing clean, production-grade code while consistently improving application performance and reliability.

Highlights

🏆 Spearheaded performance optimization across client-facing products, lifting Lighthouse scores from 55 → 90+ and reducing page load times by 40% through audits, lazy loading, and code refactoring.

🏆 Overhauled database schemas and queries, cutting server response times from ~800ms to under 200ms — a 35% boost in backend efficiency across production environments.

Blink22

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Helpdesk Analyst - Remote

Dubai, United Arab Emirates

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Contract

Summary

Served as a frontline technical support specialist, resolving complex user issues efficiently while maintaining high service quality standards. Played an active role in improving team workflows and building internal knowledge resources that reduced dependency on live support.

Highlights

🏆 Resolved 40+ daily support tickets with a 95% first-contact resolution rate, demonstrating strong troubleshooting and customer-first approach.

Aristocrat Gaming

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Frontend Developer Intern

Noida, India

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Internship

Summary

Gained hands-on experience building responsive, user-facing web applications using React.js, JavaScript, and CSS, contributing to real product features from day one. Developed a strong foundation in frontend performance and data-driven development practices.

Highlights

🏆 Built responsive React.js applications that drove a 20% increase in user engagement, while leveraging user behavior analytics to inform and prioritize feature development.

Elite Techno Groups

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Software Developer Intern

Jaipur, India

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Internship

Summary

Gained practical experience in software engineering and machine learning, working on real-world projects that involved both system development and predictive modeling. Contributed across technical and leadership dimensions, building a versatile foundation early in my career.

Highlights

🏆 Engineered a Python-based Inventory Management System handling 1,000+ sales records across 15+ items

Education

Rajkiya Engineering College

Sonbhadra, India
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Regular Computer Science Engineering Grade: 7.4 GPA

Courses

Data Structures

Database Management

Networking

Operating Systems

Design and Analysis of Algorithms

Certificates

Redis Associate Developer

Redis

Redis Associate Software Operator

Redis

Agentic AI Certified Foundations Associate

Oracle

Oracle AI Autonomous Database Certified Professional

Oracle

Oracle Cloud Infrastructure Certified Multicloud Architecture Professional

Oracle

Oracle AI Vector Search Certified Professional

Oracle

Oracle AI Cloud Database Services Certified Professional

Oracle

Oracle Cloud Infrastructure Certified Application Integration Professional

Oracle

Oracle Cloud Infrastructure Certified DevOps Professional

Oracle

Oracle Cloud Infrastructure Certified Foundations Associate

Oracle

GitHub Advanced Security

GitHub

AI Programming with Python

Udacity

Publications

Detecting Botnet Activity: Learning Discriminative Boosted Bayesian Networks for Accurate Analysis

IJRASET

The study tackles one of the most challenging real-world problems in cybersecurity — learning accurate detection models from extremely sparse network traffic data — using the CTU-13 Dataset, where over 97% of traffic flows are non-botnet, closely mimicking real-world conditions. A core contribution of this work is demonstrating how domain-driven feature engineering can combat overfitting and improve model generalizability, outperforming traditional machine learning approaches even as threat landscapes continue to evolve.